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1 files changed, 14 insertions, 0 deletions

diff --git a/src/test/compile-fail/writing-through-read-alias.rs b/src/test/compile-fail/writing-through-read-alias.rs
new file mode 100644
index 00000000..b3d21521
--- /dev/null
+++ b/src/test/compile-fail/writing-through-read-alias.rs
@@ -0,0 +1,14 @@
+// -*- rust -*-
+
+// error-pattern: writing to non-mutable slot
+
+type point = rec(int x, int y, int z);
+
+fn f(&point p) {
+  p.x = 13;
+}
+
+fn main() {
+  let point x = rec(x=10, y=11, z=12);
+  f(x);
+}